Electromechanical response of multilayered piezoelectric BaTiO₃/PZT-7A composites with wavy architecture

Electromechanical laminated composites with piezoelectric phases are increasingly being explored as multifunctional materials providing energy conversion between electric and mechanical energies. The current work explores thus-far undocumented combined microstructural effects of amplitude-to-wavelength ratio, volume fraction, poling direction on both the homogenized properties localized stress/electric field distributions in multilayered configurations under fully coupled electro-mechanical loading. In particular, Multiphysics Finite-Volume Direct Averaging Micromechanics (FVDAM) its counterpart, an in-house micromechanical multiphysics finite-element model, utilized to investigate responses wavy BaTiO 3 /PZT-7A architectures. These two methods generate highly agreeable results. Moreover, we critically examine convergence finite-volume finite element-based approaches via Average Stress Theorem Electric Displacement Theorem. comparison shows volume-based approach possesses a better numerical convergence. This study illustrates FVDAM’s ability toward analysis design engineered architecture.